Operating device for window-sashes.



v E. E, FTZ GERALD OPERATING DEVICE ma WINDOW SASHBS.

APPLICATION FILED JUNE, 1912.

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P. F. FTZ GERALD.

OPERATING DEVICE POP. Y INDOW SASHE?.

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BEST AVAILABLE COP PATRICK F. FITZ GERALD, OF NEW YORK, N. Y.

OPERATING DEVICE FOR WINDOW-SASHES.

Specttlcatton of Letters Patent.

Patented Hai'. 4, 1913.

Application tiled June 4, 1912. Serial No. 701,557.

To Il whom, it may concern Be it known that I, Parme-it F. Fi'rv. GERALD, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of 'New York, have invented a new and Improved Operatin Device for Window- Sashes, of which t-iie following is a full, clear, and exact description.

The object of the invention is to provide a new and improved o eratin device for window sashes, arrange to ena le the operator to readily raise or lower the sashes one independentI of the oth'er and without much physical exertion on the part of the operator. to securely hold the saslies in their adjusted positions and to prevent. the sashes from sticking or canting while being raised or lowere For the purpose mentioned use is made of a pair of sidewise-extendin brackets secured on the sides of the sas es at or near thc upper ends thereof, the brackets projecting into the weight chambers or pockets of the window frame through vertical slots formed in the sides of the windowfcasin a pair of endless chains connected at their inner runs with the sash brackets, the other run of each chain having interposed therein a counterbalaiieing weight and the said chains passiii over guide pulleys in the upper portion o the window casing and around sprocket wheels arranged in the lower portion of the window casing, the said sprocket wheels being journaled on transversely-extending shafts eonnected by bevel ear wheels with a longitudinally-extcndings mit journaled in the sill of the window casing, one of the said transverse shafts being extended into the room and the extended end of the shaft being provided with a handle for turning the said transverse shaft simultaneously to cause a simultaneous traveling of the said chains to raise and lower the window according to the direction in which the said handle is turned.

A practical embodiment of the invention is represented in the accompanying drawings.

forming a part of' this specification, in which similar characters of reference indicate corres ending parts in all the views.

igure 1 is a front elevation of the o ernting mechanism as applied to a windhw, parts being shown in section; Fig. 2 is an enlarged sectional lan View of the same on the line 2-2 of Eig. 1; Fig. 3 is a transverse section of the same oii the line 3 3 of Fig. 1; Fig. 4 is an enlarged sectional )lan view of the same on the line 4 4 ot' "ig. 1; Fig. 5 is an enlarged sectional side elevation of the connection between one of the brackets on a sash and the corresponding chain, part of the guideway for the window sash being shown in section; Fig. G is a per sp'ective view of one of the brackets; and Fig. 7 is an enlarged sectional side elevation, with part of one of the sash weights and its turnbuekle connection with the operating chain in elevation.

The lower and upper sashes A and B of thel window are mounted to slide u and down in the usual guideways C of a window casing D of the usual construction. The stiles of the sashes A and B are provided at or near their upper ends with sidewise-extendine' brackets E, E passing through vertical s'l-ots D formed in the window casing D and leading into the pockets or chambers D, as plainly shown in Figs. 1, 2 and 3. The ends of the brackets E of5 the lower sash A are attached to the inner runs of endless chains F disposed vertically in the weight pockets D2, and the brackets E of the upper sash B are similarly attached to the inner runs of endless chains F likewise arranged vertically and located within the pockets or cliainhers D2 and in the rear of the chains F. The upper ends of the endless chainsv F, F and F, F pass over pulleys G, G and G, G journaled in the upper portion of the window casin D, and the lower ends of the chains F, and F` F pass around sprocket wheels H, H and H', H journaled iu the lower or sill or tion Dn of the window casing D. Ilie sprocket wheels H, H are secured on transversely-extending shafts H2 `iournaled in the sill D. and the sprocket wheels H', H are secured on transverse shafts H likewise journalcd in the sill Dn of the window casing immediately in the rear of the shafts Il, H, as will be readily understood by reference to Figs. 3 and 4. One of the shafts H2` preferably the one on the right-hand side of the window casing is extended into the room and on the extended end of the shaft I-I2 is secured a hand wheel or a knob I under the control of the operator for turning the said shaft whenever it is desired to raise or lower the lower sash A, as hereinafter more fully explained. On the shafts H2, H2 are secured evel gear wheels J, .I in mesh with loo ltlfi lltl Bizet m vmLABLE CQ?" bevel gear wheels J', J secured on the end of a longitudinallv-extending shaft'K 'ourualed in suitable bearings in the sill a of the window casing. wheel or knob I is turned then the corresponding shaft IPis rotated and a like rota'ry motion is given to the other transverse shaft Il owimr to the gearin connecting the two shafts IP with each ot 1er and con sequently both chains F receive a simultaneous traveling movementto raise or lower the lower sash A accordingto the direction in which the handle or knob I is turned at the time. '1`he`shafts Il, Ila are similarl connected with each other by the use o bevel gear wheels J2 secured on the shafts I-IB and in mesh with bevel gear wheels Ja, Ja secured on the ends of a longitudinally extend shaft K extending in the sill D3 and journaled in suitable bearin s arranged therein as plainly indicated in t 1e drawings. On one of the shafts H, preferably the one in the rear of the shaft. Il carrying the main wheel or knob I, is secured a sprocket wheel I. connected by a sprocket chain L' with a sprocket wheel L2 secured on a transverselyextending shaft N arranged in the righthand poeketrI)n and journaled in suitable bearings carried by the window Casin D. The shaft N is located directly above the shaft H2 carrving the hand wheel or-knob l and the said shaft N is extended into the room and is provided at the extended end with a hand wheel or knob I' to permit of turning the shaft N with a view to rotate the right-hand shaft H3 which b the earing described rotates the other surft at the left-hand side of the window simultaneously with it, to canse a simultaneous travcling of the chains F', F' to raise or lower thel upper sash B accordin f to the direction in which the hand wheel or mob I' is turned at. the time.

From the foregoing it will be seen that by the arrangement described the o erator on turning either of the hand wheels or I' can raise or lower the lower sash A or the upper sash B.

On the extended shafts H or N are secured notched wheels O adapted to be engnged by manually-controlled catches or bolts O secured to the face of the window casing to permit of lookin either shaft H2 or N with a view to hold t ie sashes A or B locked in the adjusted position, that is, whether completely open, partly open or closed.

The sashes A and B are counterbalanced, and for this purpose counterbalancing weights P, P and P', P are employed, of which the weights P, P are interposed in the outer runs of the chains F, F and the wei hts P' are inter osed in the outer runs of tie chainsl F', l" By the arrangement described it requires but a little power on Now when thehand the part of the operator turning either hand wheel or knob I or I to raise or lower the corresponding sash A or B, as the latter are completely counterlmlanced. It will also be noticed that by the arrangement described the sashes A and B are evenly lifted or lowered on both sides thereof so that the sashes are not liable to cant or stick in the guideways C of the window casing.

In order to hold each of the chains F, l" and F', F' taut. with the desired degree, the counterbalancintr weiwhts P are used as turnbuckles, and` for this pur )ose the lower end of each weight P or I has a swivel connection Q with the corresponding end ot' the chain F, and the upper end of each weight P is provided with a screw rod It terminating in a hook R engaginrr a corresponding end of the chain F or F'. The screw rod R screws in a nut R2 secured to the top of the weight P or P so that when the weight I is turned the screw rod ll is screwed in or out. to shorten or lengthen the chain F or F' with a view to hold the chain as taut as desired. A jam nut R screws on the screw rod R against. the nut R2 to lock the screw rod R in position after the chain has been lengthened or shortened. Each weight P is also preferably provided near the ends with rings P2 o rubber or other suitable material to deaden the noise in case a weight should accidentally bump`afrainst the interior walls of the pockets 2.

It is understood that by using the counterbalancing weights P and P' as turnbuckles, the sashes A and B can be accurately hung on the chains F and F' to insure an easy up and down movement of the sashes without dan er of bending or canting of the sashcs in the guideways, es )eciallv as both chains F, F or F', F' for tlie sashes A and B are moved in unison by the mechanism described.

The operating mechanism shown and described 1s very simple and durable in construction, not liable easily to get out' of order, and on account of being for the most part within the window frame it is protected against dust and other matter.

Having thus described by invention, I claim as new and desire to secure by Letters Patent:

1. An operating device. for a window sash comprising a pair of sidewise-extending brackets on the upper ends of the stiles of the sash, the brackets projecting into the weight pockets of the window frame through vertical slots formed in the sides of the window casing, a pair of endless chains for the sash and each connected at. one run with the corresponding sash posed in the other run of each of the said chains, the said weight having at one end a swivel connection with the chain, guide pulleys in the upper ortion of the window casing and over whic pass the u per ends of the said chains, sprocket whee s around which pass the lower ends of the said chains, transverse shafts journaled in the lower portions of the sides of the window casing and carrying the said sprocket wheels a longitudinally-extending shaft journaled in the sill of the window casing, pairs of beveled meshing gear wheels connecting the ends of the said longitudinal shaft with the said transverse shafts, one of the latter extending into the room, and a handle on the outer end of the said extended transverse shaft.

2. In a. window sash balance an endless chain connected at one run with the sash, and a counter-balanciafr weight interposed in the other run of ie chain, the said coun'terbalancing, weight having at one end a swivel connection with the chain and having at the other end an adjustable screw and nut connection with the chain to permit of taking up slack in the chain.

In testimony whereof -I have signed my name to this specification in the presence of two subscribing witnesses.

PATRICK F. FITZ GERALD.

lVitnesses:

A. H. DAVIS, PHILIP D. RoLLi-IAUS.

Copies of this patent may be obtained for tive cents each, by addressing the Commissioner of Patents, Washington, D. C. 

